Senior Full-Stack Engineer (React / TypeScript / Supabase)

About the roleYou join a dedicated team working for a UK product company that is taking a two-sided SaaS platform from working prototype to production. One side is a desktop portal for business customers, the other is a mobile web app for their end users. Both run on one shared data model in real time. You are employed by Scope Merge in Tunis and work directly inside the client's team, with their tools and their process.What you will doBuild production features across the stack: React and TypeScript on the front end, Postgres and Supabase on the back endWork from an existing design system, component library and written specificationExtend a tested database schema: migrations, row-level security, access rulesImplement GDPR requirements for sensitive personal data: storage, retention and deletionTake the product through a private rollout to first customers, then a public launchMust-haves5+ years building web products in productionStrong React and TypeScriptSolid PostgreSQL: schema design, migrations, query performanceHands-on Supabase experience (auth, row-level security, realtime), or deep Postgres experience and the ability to get there fastA habit of writing testsVery good English for daily work with a UK teamBased in TunisiaNice to haveMobile-first web apps or PWAsPayment integrationsExperience with GDPR or other regulated dataEarly-stage product experience, from prototype to launchWhat we offerPermanent contract (CDI) with Scope Merge in TunisLong-term, dedicated work on one product with one teamDirect collaboration with the client's founders and engineers